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| author | Borislav Petkov <petkovbb@googlemail.com> | 2009-01-02 16:12:56 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-01-02 16:12:56 +0100 |
| commit | b16aabc9374217fa2d28e72fd9a6e6d60905e1b9 (patch) | |
| tree | bfa717c4a05d74a7b8ae4ef72f2f248d77617db5 /drivers/ide | |
| parent | 06cc2778a1744b79edcfa394ce2d41f09134b2b1 (diff) | |
| download | linux-3.10-b16aabc9374217fa2d28e72fd9a6e6d60905e1b9.tar.gz linux-3.10-b16aabc9374217fa2d28e72fd9a6e6d60905e1b9.tar.bz2 linux-3.10-b16aabc9374217fa2d28e72fd9a6e6d60905e1b9.zip | |
ide-atapi: start dma in a drive-specific way
There should be no functionality change resulting from this patch.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/ide-atapi.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index c9beda5fca1..e8688c0f864 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -489,7 +489,7 @@ static int ide_delayed_transfer_pc(ide_drive_t *drive) static ide_startstop_t ide_transfer_pc(ide_drive_t *drive) { - struct ide_atapi_pc *pc = drive->pc; + struct ide_atapi_pc *uninitialized_var(pc); ide_hwif_t *hwif = drive->hwif; struct request *rq = hwif->hwgroup->rq; ide_expiry_t *expiry; @@ -518,6 +518,8 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive) timeout = rq->timeout; expiry = ide_cd_expiry; } else { + pc = drive->pc; + cmd_len = ATAPI_MIN_CDB_BYTES; /* @@ -550,9 +552,14 @@ static ide_startstop_t ide_transfer_pc(ide_drive_t *drive) ide_set_handler(drive, ide_pc_intr, timeout, expiry); /* Begin DMA, if necessary */ - if (pc->flags & PC_FLAG_DMA_OK) { - pc->flags |= PC_FLAG_DMA_IN_PROGRESS; - hwif->dma_ops->dma_start(drive); + if (dev_is_idecd(drive)) { + if (drive->dma) + hwif->dma_ops->dma_start(drive); + } else { + if (pc->flags & PC_FLAG_DMA_OK) { + pc->flags |= PC_FLAG_DMA_IN_PROGRESS; + hwif->dma_ops->dma_start(drive); + } } /* Send the actual packet */ |